Finite Group Databasebeta
Cayley diagram

#21129

order256
nilpotency class3
isoclinismisoclinic class of #3008
automorphismAut(G) order 32768
homologyAbelianization (H1) = C23×C4 · Schur multiplier (H2) = C23×C4

Aliases

No aliases for this group.

Subgroups

subgroupG/H
center, socleC23C22×D4
commutatorC2×C4C23×C4
Frattini, cosocleC22×C4C24
prime radicalC22×D8C22
LCSG ▷ C2×C4 ▷ C2 ▷ C1
UCSC1 ◁ C23 ◁ #376 ◁ G
LECSG ▷ C22×C4 ▷ C2 ▷ C1

469 conjugacy classes of subgroups; only the 171 normal subgroups are shown.

normal subgroups only

This group has 469 conjugacy classes of subgroups — too many to draw. Only its 171 normal subgroups are shown.

Dotted edges: containments with no intermediate normal subgroup — omitted non-normal subgroups may lie between.

Full subgroup data →

Presentation

minimal degreeμ(G) = 28
transitive degreeμt(G) = 128

A minimal faithful permutation representation — 4 generators on 28 points:

(1,2,4,3)(5,6)(7,10)(8,9)(11,12)(13,14)(15,18)(16,19)(17,20)(21,24)(22,27)(23,25)(26,28);(1,3,4,2)(6,9)(10,12)(13,15)(14,18)(16,23)(17,22)(19,25)(20,27)(21,26)(24,28);(14,19)(16,24)(18,25)(20,21)(23,28)(26,27);(5,7,8,11)(6,10,9,12)(14,20)(15,22)(19,21)(23,28)

Polycyclic presentation:

2^8|a^2=g,b^2=g,d^2=e,f^2=h,b^a=be,c^a=cf,d^a=dh,f^a=fh,d^b=dh,f^c=fh

Conjugacy classes & character table

64 conjugacy classes — view the full character table.

Relationships

maximal subgroup of#222851, #222855, #222864, …
maximal normal subgroup of#222851, #222855, #222864, …
maximal quotient of#203192, #203216, #203240, …

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(256, 14117);